1 /* 2 * Copyright 2016 The gRPC Authors 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package io.grpc.grpclb; 18 19 import io.grpc.ExperimentalApi; 20 import io.grpc.Metadata; 21 22 /** 23 * Constants for the GRPCLB load-balancer. 24 */ 25 @ExperimentalApi("https://github.com/grpc/grpc-java/issues/1782") 26 public final class GrpclbConstants { 27 28 /** 29 * The opaque token given by the remote balancer for each returned server address. The client 30 * will send this token with any requests sent to the associated server. 31 */ 32 public static final Metadata.Key<String> TOKEN_METADATA_KEY = 33 Metadata.Key.of("lb-token", Metadata.ASCII_STRING_MARSHALLER); 34 35 private GrpclbConstants() { } 36 } 37
